4 In 1 Gas Detector

Portable compound gas alarming detector can be checked four kinds of poisonous and harmful gas at the same time which has small size, safety save electricity, all Chinese and simple operation.This detector has two buttons, a liquid crystal display and related alarm (alarm lights, buzzer and vibration) with miroUSB interface. It means you can charge by using this micro USB interface.
It also can read alarm record by being connected to the micro USB to TTL adapter.Portable compound gas alarming detector itself with real-time storage capabilities, can realize real time record on alarm and time.